Pokemon Platinum Walkthrough and Strategy Wiki SuperGuide

Part 1/2: Forest Badge

Go back to Jubilife City after defeating Roark. Head north this time. There will be two Galactic Grunts, Prof. Rowan, and Dawn/Lucas. You team up with Dawn and battle them.

Galactic Grunt:Lv11

Galactic Grunt 2:Lv11

Now you can head north.

Route 204:

At the southern part, you can battle a few trainers.

Lass Sarah:Lv7

Lass Samantha:Lv7

Youngster Tyler:Lv8

Ravaged Path:

Now, if you want a Zubat, you can catch one, but it's a real pain to raise it. Anyways, head east since the north is inaccessible. If you don't have a Rock Smash Pokemon, then teach it to your starter or any other Pokemon you catch.